Recently, I experienced I/O issues while trying to scan documents on my Samsung SL-C460W. It has worked flawlessly with Windows 10 before, so seems like something changed in the latest Windows 10 build.
Reinstalling the Samsung scanner driver didn’t help, also scanning by WIA did not work. Communicating with the scanner was no longer possible, while printing works without any issues.
Seems like due to changes in recent Windows 10 builds two file have been removed which are required by the scanner driver to be able to communicate with the device.
Luckily Samsung has provied a fix for that. Officially it’s meant for some other multi-functional device, but it works fine with the C460 series, too.
Find it on the Samsung webpage.